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Annotation of 43BSDReno/sbin/routed/table.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  *
        !            19:  *     @(#)table.h     5.8 (Berkeley) 6/1/90
        !            20:  */
        !            21: 
        !            22: /*
        !            23:  * Routing table management daemon.
        !            24:  */
        !            25: 
        !            26: /*
        !            27:  * Routing table structure; differs a bit from kernel tables.
        !            28:  *
        !            29:  * Note: the union below must agree in the first 4 members
        !            30:  * so the ioctl's will work.
        !            31:  */
        !            32: struct rthash {
        !            33:        struct  rt_entry *rt_forw;
        !            34:        struct  rt_entry *rt_back;
        !            35: };
        !            36: #ifdef RTM_ADD
        !            37: #define rtentry ortentry
        !            38: #endif
        !            39: 
        !            40: struct rt_entry {
        !            41:        struct  rt_entry *rt_forw;
        !            42:        struct  rt_entry *rt_back;
        !            43:        union {
        !            44:                struct  rtentry rtu_rt;
        !            45:                struct {
        !            46:                        u_long  rtu_hash;
        !            47:                        struct  sockaddr rtu_dst;
        !            48:                        struct  sockaddr rtu_router;
        !            49:                        short   rtu_flags;
        !            50:                        short   rtu_state;
        !            51:                        int     rtu_timer;
        !            52:                        int     rtu_metric;
        !            53:                        int     rtu_ifmetric;
        !            54:                        struct  interface *rtu_ifp;
        !            55:                } rtu_entry;
        !            56:        } rt_rtu;
        !            57: };
        !            58: 
        !            59: #define        rt_rt           rt_rtu.rtu_rt                   /* pass to ioctl */
        !            60: #define        rt_hash         rt_rtu.rtu_entry.rtu_hash       /* for net or host */
        !            61: #define        rt_dst          rt_rtu.rtu_entry.rtu_dst        /* match value */
        !            62: #define        rt_router       rt_rtu.rtu_entry.rtu_router     /* who to forward to */
        !            63: #define        rt_flags        rt_rtu.rtu_entry.rtu_flags      /* kernel flags */
        !            64: #define        rt_timer        rt_rtu.rtu_entry.rtu_timer      /* for invalidation */
        !            65: #define        rt_state        rt_rtu.rtu_entry.rtu_state      /* see below */
        !            66: #define        rt_metric       rt_rtu.rtu_entry.rtu_metric     /* cost of route */
        !            67: #define        rt_ifmetric     rt_rtu.rtu_entry.rtu_ifmetric   /* cost of route if */
        !            68: #define        rt_ifp          rt_rtu.rtu_entry.rtu_ifp        /* interface to take */
        !            69: 
        !            70: #define        ROUTEHASHSIZ    32              /* must be a power of 2 */
        !            71: #define        ROUTEHASHMASK   (ROUTEHASHSIZ - 1)
        !            72: 
        !            73: /*
        !            74:  * "State" of routing table entry.
        !            75:  */
        !            76: #define        RTS_CHANGED     0x1             /* route has been altered recently */
        !            77: #define        RTS_EXTERNAL    0x2             /* extern info, not installed or sent */
        !            78: #define        RTS_INTERNAL    0x4             /* internal route, not installed */
        !            79: #define        RTS_PASSIVE     IFF_PASSIVE     /* don't time out route */
        !            80: #define        RTS_INTERFACE   IFF_INTERFACE   /* route is for network interface */
        !            81: #define        RTS_REMOTE      IFF_REMOTE      /* route is for ``remote'' entity */
        !            82: #define        RTS_SUBNET      IFF_SUBNET      /* route is for network subnet */
        !            83: 
        !            84: /*
        !            85:  * Flags are same as kernel, with this addition for af_rtflags:
        !            86:  */
        !            87: #define        RTF_SUBNET      0x8000          /* pseudo: route to subnet */
        !            88: 
        !            89: struct rthash nethash[ROUTEHASHSIZ];
        !            90: struct rthash hosthash[ROUTEHASHSIZ];
        !            91: struct rt_entry *rtlookup();
        !            92: struct rt_entry *rtfind();

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